Cutting or trimming attachment for sewing-machines



(Model) t R. W..RIESS. Cutting or'Trimming Attachment for SewingMachines.

No.- 242,791. Patented June 14,1881.

['4 4. E'IIIIIIIIA D UNITED STATES PATENT OFFICE.

R. WILLIAM RIESS, OF PHILADELPHIA, PENNSYLVANIA.

CUTTING OR TRlMMlNG ATTACHMENT FOR SEWING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 242,791, dated June14., 1881.

Application filed February 10, 1881. (ModeL) To all whom it may concernBe it known that I, R. W. RIEss, of Philadelphia, county ofPhiladelphia, and State of Pennsylvania, have invented a new Improvementin Cutting or Trimming Attachments for Sewing-Machines and I do herebydeclare that the following is a full, clear, and exact descriptionthereof, which will enable others skilled in the art to make and use thesame, reference beinghad to the accompanying drawin gs, forming part ofthis specification, in which my improvement is fully illustrated.

The present invention relates to an improved attachment forsewing-machines for the purpose of cutting off or trimming the edge ofthe material or fabric parallel with the seam and performing its work atthe same time the stitching or sewing is being done, and is particularlyadapted to such work as the seaming up of stockings, hose, or otherarticles, when it is desirable to trim close to and parallel with theseam. v

Figure l in the drawings is a front eleva tion of the head of asewing-machine, showing the fixed knife A, its connecting-bracket L,needle H, and needle-bar I; also, the presserfoot B, feeder G, andfeed-bar F. Fig. 2 is a side elevation of the'same, showing the arm ofmachine broken off, and having the needle-bar and needle removed, andshowing an end view of the feeders G and D, with the beveling orclearance at the under side. Fig. 3 is a view of the knife A, showingits screw-slots and its sloped cutting-edge. Fig. ashows thefeedsurfacesof the feeders O and I), with the angular out teeth out on surface of D.Fig. 5 is a plan or top view of the presser-foot B, showing needle-slotk and knife-slot Z. Fig. 6 is a plan or top view of the feeder-bar F,and showing screw-holes by which the two feeders G and D are attached tothe said bar; also, the fork at m. Fig. 7 is an end view of feed-bar F,and shows the bevel or clearance in the fork m. r

The knife A, when in position, stands perpendicular directly back and tothe right of the needle H, (the space to the right being equal to thedistance it is desired to out or trim from the seam or stitching,) andpresses down through the slot Z in the presser-foot B, and also betweenthe two feeders O and D, and is attached to the stationary head of themachine by means of the bracket L.

The object of the second or auxiliary feed the direction of the threadsof the fabric thethreads will fall into the grooves, and thus to someextent avoid the pressure of the presserfoot upon them.

The knife A atits lower end or cutting-edge is inclined backward to givea shearing action in cutting.

The feed-bar F is forked at m, for the purpose of giving clearance tocuttings from the knife.

Having thus described my improvement, I will now describe its operation,which is as follows: With the several parts attached and adjusted intheir proper positiomas described, we may proceed to sew or stitch theedges of a fabric together in the usual way, and it will be seenthatimmediately the fabric is stitched and carried forward by thefeeder, as usual, under the presser-foot, the fabric will come incontact with the knife A, and, being held firmly on either side byfeed-surfaces O and D, will be readily out close by and parallel to thestitching, and thus leaveatrue smooth trimmed edge to the work.

The object of beveling or cutting away the under side of the feeders Gand D is to prevent theliability of the space becoming filled up withcuttings of the fabric. The sides of the opening in the forked feed barare also cut away or beveled in the same manner and for the samepurpose. f

Having fully described myimproveincnt and its operation, what I claim asmy invention,

and desire to secure by Letters Patent, is-- The combination, with astationary cuttingknife, A, of the slotted presser-foot B, and thefeed-bar L, having two feed-surfaces, O and D, one of said feed-surfacesbeing provided with obliquely-arranged grooves or teeth, substantiallyas and for the purpose set forth.

R. WM. RIESS. Witnesses:

EDMUND B. SEYMOUR, WM. F. POTTER.

